$390 Cheap Delta flights Seattle (SEA) to Mexico City (MEX)

View $390 flight on Mon, Nov 10, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

$390 Cheap Delta flights Seattle (SEA) to Mexico City (MEX)

Prices were available within the past 7 days and start at $390 for one-way flights and $838 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Nov 29 - Sun, Nov 30
SEA
Seattle
MEX
Mexico City
$838 Roundtrip, just found
$838
Roundtrip
just found
Select Delta flight, departing Sat, Nov 29 from Seattle to Mexico City, returning Sun, Nov 30, priced at $838 just found
Flights from Seattle (SEA) to Mexico City (MEX)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Mexico City Intl.
Airlines serving
Aeromexico, Air Canada, American Airlines, Delta, Frontier Airlines, United, Volaris
Popular airline
Aeromexico
Distance
2333 mi
Average flight time
4 hours 35 mins

Frequently asked questions

How much is a Delta Air Lines flight from Seattle - Tacoma Intl. Airport (SEA) to Mexico City Intl. Airport (MEX)?
Finding cheap one-way Delta Air Lines flights from SEA to MEX from $390 on Expedia couldn't be easier — just filter by "Price (lowest to highest)." Alternatively, check out our budget-friendly round-trip fares from $838 for your next adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SEA to MEX with Delta Air Lines?
Delta Air Lines flights to Mexico City are generally more affordable in the quieter months of January and September. Whether you need a one-way or round-trip ticket, you could find a better deal then.
What is the cheapest time to book flights from Seattle - Tacoma Intl. Airport (SEA) to Mexico City Intl. Airport (MEX) with Delta Air Lines?
Getting the best Delta Air Lines deals from SEA to MEX often comes down to booking at the right moment. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. Better still, you can pocket 17% on average by buying your tickets on a Sunday compared to a Friday, which is often the most expensive day to book.* It's a good idea to start searching for flights about one month before you want to travel.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to Mexico City Intl. Airport (MEX)?
To see if there's a direct route from SEA to MEX with Delta Air Lines or any other carriers, select the "Nonstop" filter when searching for tickets.
What is the earliest Delta Air Lines flight from SEA to MEX?
To find the earliest departures from SEA to MEX with Delta Air Lines, sort your results by "Early Morning" and "Morning." Booking an early flight usually means you'll experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in Mexico City?
Catch a Delta Air Lines flight from Seattle - Tacoma Intl. Airport (SEA) to Mexico City, and you'll likely arrive at Mexico City Intl. Airport (MEX). This is the airline's primary hub in this destination.
Why fly with Delta Air Lines from SEA to MEX?
Taking off from SEA to MEX with Delta Air Lines means enjoying plenty of perks, including an excellent in-flight experience and a rewarding loyalty program. Plus, when booking through Expedia, One Key™ members can earn OneKeyCash™* to redeem on select future travel purchases. That's on top of the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Seattle - Tacoma Intl. Airport (SEA) to Mexico City Intl. Airport (MEX)?
It's usually possible to cancel or change your flight, although additional charges may apply if you made your booking more than 24 hours ago. Need to keep your options open? Make use of our "No cancel fee" or "Changes included" filter to find flights that won't charge extra if you have to alter your plans. To update your booking, head to "Trips," select your flight and click on "Manage Booking" for more information.

Explore a world of travel with Expedia

*Available to One Key members.